EP2802274A1 - Alésoirs médicaux et procédés pour les former - Google Patents

Alésoirs médicaux et procédés pour les former

Info

Publication number
EP2802274A1
EP2802274A1 EP13705034.0A EP13705034A EP2802274A1 EP 2802274 A1 EP2802274 A1 EP 2802274A1 EP 13705034 A EP13705034 A EP 13705034A EP 2802274 A1 EP2802274 A1 EP 2802274A1
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting edges
panels
cutting tool
zone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13705034.0A
Other languages
German (de)
English (en)
Inventor
Christopher G. Sidebotham
Leon Roitburg
Randall J. Lewis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lrs Science And Technology LLC
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2802274A1 publication Critical patent/EP2802274A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1657—Bone breaking devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1664—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip
    • A61B17/1666—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip for the acetabulum
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1675—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the knee
    • A61B17/1677—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the knee for the patella
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/0093—Working by laser beam, e.g. welding, cutting or boring combined with mechanical machining or metal-working covered by other subclasses than B23K
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B23P15/46—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools reaming tools
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/164—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans intramedullary
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00526—Methods of manufacturing

Definitions

  • This disclosure relates to a novel systems and method relating to cutting tools.
  • Cutting tools such as medical reamers used by surgeons, generally have a cutting surface that is able to cut and/or remove material from an object.
  • cutting tools are used for machining bone in the preparation of artificial joints including hips, knees, elbows and shoulders, and also in the repair of long bone fractures.
  • the design and method of manufacturing cutting surfaces of cutting tools can affect the efficiency, functional life of the spherical reamer and cost in manufacturing. Accordingly, improvements relating to design and manufacturing methods are desirable.
  • the cutting tools comprise medical reamers, including acetabular reamers, long bone cylindrical reamers, long bone tapered reamers, patella reamers and glenoid reamers along with the design of different cutting teeth in specific zones of the reamers and the improved method of making these reamers and their cutting edges.
  • a cutting tool is provided with a cutting surface on a first side of the cutting tool and an attachment member on a second side of the cutting tool.
  • the cutting surface can include a plurality of cutting edges and the attachment member can be configured to be coupled to a powered driving member (e.g., a drill).
  • the cutting tool comprises an axis of rotation and the cutting surface defines a plurality of latitude lines. The plurality of cutting edges can be oriented at varying orientation angles relative to the latitude lines.
  • the plurality of cutting edges can be in three different zones and respective cutting edges in the different zones have different characteristics.
  • the different zones can comprise a polar zone, a transition zone, and an equatorial zone.
  • Respective cutting edges can define a cutting angle between the cutting edge and a first side of the cutting tool, and the cutting angle between cutting edges in the polar zone can be larger than those defined by cutting edges in the transition zone, and the cutting angle between cutting edges in the transition zone can be larger than those defined by cutting edges in the equatorial zone.
  • the tooth height can be the same (i.e., substantially the same) regardless of the cutting angle.
  • the orientation angles vary depending on whether the respective cutting edges are in the polar zone, the transition zone, or the equatorial zone, and the orientation angle of respective cutting edges in the equatorial zone is greater than the orientation angle of respective cutting edges in the transition zone, and the orientation angle of respective cutting edges in the transition zone is greater than the orientation angle of respective cutting edges in the polar zone.
  • the thickness of the side wall is less than 0.040 inches, or in some cases, between 0.022 inches and 0.40 inches. Openings can be provided adjacent respective cutting edges, the respective openings defining a funnel angle that is between 20 and 40 degrees. In some cases, the funnel angle can be between 25 and 35 degrees.
  • the cutting surface is a panel and the cutting tool comprises a plurality of separate panels.
  • the cutting tool can include a frame member (e.g., a center support and a base) and the plurality of separate panels can be coupled to the frame member.
  • a method for forming a cutting tool can include forming a plurality of panels from one or more flat sheets of metal and coupling the plurality of panels to a frame member to form the cutting tool.
  • the plurality of panels can be formed with a plurality of cutting edges and a plurality of openings adjacent respective cutting edges.
  • the plurality of panels When coupled to the frame member, the plurality of panels can define a plurality of latitude lines about the axis of rotation of the cutting tool and the plurality of formed cutting edges have orientation angles relative to the latitude lines that vary.
  • respective panels can have cutting edges with orientation angles that vary along the respective panel.
  • the act of forming a plurality of panels comprises stamping the one or more flat sheets of metal to form a plurality of cavities and punching holes at or adjacent to the plurality of cavity to provide bone- chip-receiving openings.
  • the act of forming the plurality of cavities can include forming a plurality of "V"-shaped cavities.
  • the act of forming the plurality of panels can include stamping the one or more panels to create a desired height of the cutting edges and to provide a desired curvature of the one or more panels.
  • the act of coupling the plurality of panels to the frame member can include forming a frame member that comprises a center support, a base, and a form dome, and securing the plurality of panels to the center support, the base, and the form dome.
  • the act of securing the plurality of panels to the center support, the base, and the form dome can be performed by laser welding or other types of welding.
  • the act of coupling the plurality of panels to the frame member can also include placing the plurality of panels into an injection molding tool and injection molding the frame member around the plurality of panels to create the frame member.
  • the act of forming a plurality of panels from one or more flat sheets of metal can include forming the plurality of cutting edges with different zones that have cutting edges with different characteristics, the different zones comprising a polar zone, a transition zone, and an equatorial zone.
  • Respective cutting edges can define a cutting angle between the cutting edge and a first side of the cutting tool, and the cutting angle between cutting edges in the polar zone are larger than those defined by cutting edges in the transition zone, and the cutting angle between cutting edges in the transition zone are larger than those defined by cutting edges in the equatorial zone.
  • the act of punching holes at or adjacent to the plurality of cavity comprises forming bone-chip-receiving openings with a funnel angle that is between 20 and 40 degrees.
  • the one or more flat sheets of metal have a thickness less than 0.040 inches.
  • the method includes determining an effective functional life of the cutting tool.
  • a cutting tool is provide that has a cutting surface on a first side of the cutting tool, the cutting surface comprising a plurality of cutting edges, and an attachment member on a second side of the cutting tool, the attachment member being configured to be coupled to a powered driving member.
  • a plurality of cutting edges are provided in at least three different zones and respective cutting edges in the different zones have different characteristics.
  • FIG. 1 illustrates an acetabular reamer, the use of the reamer to prepare the acetabulum, and a press-fit acetabular implant positioned as part of a total hip procedure.
  • FIG. 2 illustrates axial force applied by a surgeon, by pushing the cutter into the acetabulum and a second torsional force exerted by the power reaming tool.
  • FIG. 3 illustrates a cutting tool composed of a sharp tooth edge, a specific tooth elevation, specific cutting angle, a specific tooth orientation to the axis of rotation and a peripheral opening around the cutting edge providing an improved flow path for the bone debris.
  • FIG. 4 illustrates another way of manufacture of cutting teeth geometry.
  • FIG. 5 illustrates a novel cutting tool having a plurality of teeth.
  • FIG. 6 illustrates a novel cutting tool having a plurality of teeth.
  • FIG. 7 illustrates a schematic view of cutting teeth zones and their general functions.
  • FIG. 8 illustrates a schematic view of cutting teeth zones and their general functions.
  • FIG. 9 illustrates a schematic view of cutting forces applied by a cutting tool.
  • FIG. 10 illustrates a comparison of the frictional forces associated with bone chips created by cutting tools having different thicknesses.
  • FIG. 11 illustrates exemplary operations for forming panels with multiple teeth designs and assembling such panels into a reamer.
  • FIG. 12 illustrates a spherical reamer formed from panels coupled to a plastic molded part.
  • FIG. 13 illustrates a cylindrical reamer formed from panels coupled to a plastic molded part.
  • FIG. 14 illustrates the results of an exemplary test procedure.
  • FIG. 15 illustrates exemplary cutting tools of at least some of the disclosed embodiments, including a spherical reamer, long bone tapered reamer, cylindrical reamer, and patellar reamer.
  • the term "effective functional life” means the amount of use a tool can experience before it begins to operate suboptimally for its intended purpose. In some embodiments, the effective functional life can be based on a number of uses of the tool and/or an amount of time the tool has been used.
  • the term "single-use” tool or instrument means a tool or instrument that is configured and/or intended to be used once before being discarded. Thus, a single- use tool or instrument is a non-reuseable device in contrast to reusable tools or instruments which, subject to certain procedures such as cleaning and sterilization, may be used more than once.
  • the term "powered driving member” means any device capable of driving a cutting tool such as, for example, a drill.
  • FIG. 1 illustrates an acetabular reamer, the use of the reamer to prepare the acetabulum, and a press-fit acetabular implant positioned as part of a total hip procedure.
  • the initial stability of the implant is critical to long term success and if the implant moves large amounts (e.g., 75 microns or more) under physiological loads post-operatively, it can result in soft tissue growing into the implant rather than bone. If this occurs, the implant will eventually loosen. Accordingly, the accuracy of the initial fit must provide stability of the implant to allow bone to grow into the implant during the first 6-12 weeks after surgery. In some instances, the implant moves large amounts (e.g., 75 microns or more) under physiological loads post-operatively, it can result in soft tissue growing into the implant rather than bone. If this occurs, the implant will eventually loosen. Accordingly, the accuracy of the initial fit must provide stability of the implant to allow bone to grow into the implant during the first 6-12 weeks after surgery. In some instances, the implant moves large amounts (e.g., 75 microns or more) under physiological loads post-operatively, it can result in soft tissue growing into the implant rather than bone. If this occurs, the implant will eventually loosen. Accordingly, the accuracy of the initial fit must provide stability of the
  • interference level required for cementless acetabular implants can be required to be very small (e.g., less than 2 mm, and, in some cases, preferably less than 1 mm).
  • commercial cutters can vary in their accuracy by as much as 0.25 mm and these variations can result in initial acetabular implant stability. Because the initial interference fit provides stability to the implant, improved accuracy of the teeth height and performance can assist in achieving this goal.
  • reamers utilize different cutting teeth configurations and different orientations to address the different bone cutting requirements and thereby improving the efficiency of the cut.
  • By efficiently designing cutting teeth for specific operations faster bone cuts can be achieved, thereby producing less friction.
  • Minimizing the friction generated by the reamers relates directly to maintaining the life of the bone. Friction can lead to heat and if the cutter-bone interface reaches temperatures above 50°C (122°F) bone death (necrosis) can occur. This can affect long term success of the procedure whether the implant is used with or without bone cement. If the bone preparation bed is damaged due to excessive heat generated from the acetabular cutter, the fixation of the implant will be compromised and can lead to loosening and revision.
  • cutting surfaces e.g., teeth
  • teeth can comprise a sharp tooth edge (tolerance 0.0005" to 0.002" tooth edge radius), a specific tooth elevation (tolerance 0.002" - 0.004"), specific cutting angle, a specific tooth orientation to the axis of rotation (e.g., tool angle), and a peripheral opening around the cutting edge providing a designed flow path for the bone debris as shown in FIG. 3.
  • This tooth geometry can also be manufactured according to FIG. 4 through a series of stamping operations allowing for multiple teeth to be made at the same time.
  • a flat sheet of material e.g., metal
  • a plurality of holes can be punched around the "V"-type cavities (or grooves), creating a cutting edge.
  • another stamping step can be performed to stamp the tooth height and curvature in operation (or multiple operations if desired). As shown in FIG.
  • the rake angle can vary between about 5 and 25 degrees, and in other embodiments between about 5 and 15 degrees (e.g., about 10 degrees)
  • the tooth angle (a) can be established in the first forming operation and can be set ( ⁇ and ⁇ angles) based on the intended function. Multiple iterations of this tooth design can be provided in specific zones of the reamer surface which address the intended type of cutting required at those locations.
  • the novel cutting tools disclosed herein can have teeth arranged in a spiral or helix manner on the surface of the cutter.
  • the tooth designs and tooth orientations can be optimized to reduce the reaming time required to complete the preparation.
  • the cutting edges of the teeth can be oriented at different angles to the lines of latitude based on the required cutting functions at various positions on the surface of the reamer. This can provide for a faster cut by converting the rotational energy into linear energy assisting in advancing the reamer into the preparation analogous to a screw thread (FIG. 5).
  • the tooth orientation can further improve the cutting force at the tooth edge.
  • the angle of orientation of the cutting edge relative to axis of rotation can increase from the equatorial teeth to the polar teeth and decrease relative to the latitude lines.
  • At least three different types of cutting teeth e.g., orientation angles and/or cutting angles varying
  • at least three regions are provided with similar type teeth in each region.
  • the teeth can vary in a transitional manner effectively providing more than three zones.
  • the range of variation can be orientation angles of between 10 and 30 degrees (more preferably between 15 and 25 degrees— e.g., 20 degrees) for the equatorial zone, orientation angles of less than 5 degrees (more preferably about 0 degrees) in the polar zone, and somewhere in between for the orientation angles in the transition zone (e.g., between 0 and 20 degrees, or preferably between 5 and 15 degrees— e.g., 10 degrees).
  • a benefit of the larger orientation angles in the equatorial zone is a portion of the axial load applied by the operator will be converted into driving the cutting edge into the bone. As you move to the polar zone, the angle of the tooth on the surface has less effect as the tooth becomes perpendicular to the direction of the cut. That is, the specific tooth geometry in the polar zone needs to address an end cutting ability rather than a side cutting ability.
  • FIG. 7 illustrates an exemplary process by which a cutting tool (e.g., a spherical reamer) transitions from engagement with the bone at one area to another area of the cutting tool.
  • a cutting tool e.g., a spherical reamer
  • polar teeth refer to cutting surfaces at and/or adjacent the pole of the spherical reamer
  • equatorial teeth refer to cutting surfaces at and/or adjacent to the equator of reamers having a hemispherical shape (e.g., the area furthest from the poles in FIG. 7)
  • transition teeth refer to cutting surfaces between the polar and equatorial teeth.
  • the spherical reamer begins by introduction into the concave surface of the acetabulum. It is noted that this initiation of the cut involves just the equatorial teeth. These equatorial teeth are performing more of a side cutting function and therefore can have a specific tooth angle based on this intended function. Additional teeth (i.e., the transitional teeth) become engaged with the bone as the reamer is further introduced into the acetabulum. The transitional teeth perform a combination of side-cutting and end- cutting and can be optimized for this purpose. As the reamer becomes fully inserted into the preparation site, the teeth at the pole (i.e., the polar teeth) of the reamer serve to primarily end-cut.
  • the teeth at the pole i.e., the polar teeth
  • the teeth can have different cutting demands depending on their location on the surface of the reamer and can be configured accordingly.
  • FIG. 8 illustrates the manner in which the cutting angles of the teeth can vary in accordance with the required cutting function of the bone.
  • the table below illustrates the types of teeth and their configurations as reflected in FIG. 8.
  • FIG. 8 illustrates these three zones as distinct zones, it should be understood that the cutting surfaces can transition gradually from one zone to another.
  • polar teeth can transition gradually from polar teeth with the orientation and characteristics noted above to transition teeth with the orientation and characteristics noted above.
  • some teeth can have orientation and characteristics of polar teeth (e.g., 65 degree cutting angle), some can have characteristics of transition teeth (e.g., 45 degree cutting angle), and some teeth between the polar teeth and transition teeth can have characteristics somewhere inbetween (e.g., 55 degree cutting angle).
  • Proper bone chip exit paths can also contribute to an improved surgical preparation. With a non-impeded path for the bone chips to travel away from the cutter, it enables the instrument to produce a faster and cooler bone cut. As shown in FIG. 3, openings can be provided adjacent cutting surfaces to provide a "funnel" that permits bone chips to efficiently flow from the face of the reamer to avoid additional torque requirements to drive the cutter. Without such openings, increased torque is required to drive the cutting tool and such increased torque is usually accompanied by increased axial pressure as the operator senses the resistance in advancing the cutter and applies increased loads. This combination generates increased heat through friction capable of generating temperatures which can cause bone necrosis.
  • the novel cutting tools can be manufactured by forming the spherical body and teeth from thinner sheet metal, .005" - .020", which can improve the efficiency in manufacturing (longer tool life of the forming tools) and ability to create a sharp tooth edge without a specific sharpening operation.
  • thinner material better dissipates the heat generated from the friction of cutting the bone over a thicker walled, heavier mass reamer. The thinner material also produces less friction, therefore a lower temperature at the surface, through reduction of the Coriolis forces (FIG. 9).
  • FIG. 10 illustrates a comparison of the frictional forces associated with bone chips created by cutting tools having different thicknesses.
  • the bone chip particles must travel a greater distance in contact with the cutting surface of the cutter.
  • lower temperatures can be achieved by producing cutters with wall thickness of between .005" and .020".
  • the following novel manufacturing methods can be used to produce cutting tools with such reduced wall thicknesses.
  • FIG. 11 illustrates exemplary operations for manufacturing cutting tools.
  • panels can be formed with multiple teeth designs and a reamer can be assembled as shown.
  • This design and method of manufacturing a spherical reamer can be faster and more efficient than conventional techniques. In some embodiments, this method can be produced in fewer steps, such as in nine operations. In comparison, some conventional approaches of manufacturing of cutting tools can require hundreds of operations to form a spherical reamer.
  • stamped cutting panels can be formed by punching cavities in a flat sheet, forming holes for receiving bone chips, and setting panel curvature and teeth height.
  • a center support, base, and dome can be formed and assembled with the panels to form a single cutting tool.
  • Teeth are formed as contours of the intended spherical surfaces as opposed to just straight edges.
  • the opening around the teeth can be further formed into funnels at specific angles to direct the bone chips away from the outer surface and into the hollow cavity of the cutter.
  • any number of teeth e.g., 1 - 20 or more
  • any number of teeth can be made in a single forming step.
  • any number of teeth e.g., 1 - 20 or more
  • Laboratory testing of a disclosed embodiment provided a comparison to existing art spherical reamers. Bovine bone specimens were used to monitor the speed to prepare a standard preparation, the temperature generated during that preparation and how many preparations could be completed before cutting edge damage generated a temperature exposure to the bone above 50°C (122°F).
  • FIG. 12 summarizes the results of this testing and illustrates some of the improvements, such as the ability to cut bone at a lower temperature for a greater number of uses.
  • FIG. 15 illustrates exemplary cutting tools of at least some of the disclosed embodiments, including a spherical reamer, long bone tapered reamer, cylindrical reamer, and patellar reamer.
  • the cutting tools and methods of manufacturing the same can provide a number of improvements, including (in certain embodiments) at least some of the following improvements:
  • a thinner material which also provides for more efficient forming of teeth and component parts improving manufacturing tool life.
  • the novel approach to producing more efficient medical reamers described herein can help ensure a proper bone preparation for every patient.
  • the cutting tools described herein can provide improved sharpness, reduced heat during the reaming and a faster preparation based on tooth geometry and orientation. These improvements are also possible through a less expensive manufacturing process which makes it more economical to discard the reamer when it becomes dull.
  • novel medical reamers can include at least some of the following design parameters, enabling the production of more efficient tools for cutting bone:

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Dentistry (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un outil de coupe comportant une surface de coupe d'un premier côté de l'outil de coupe et un élément de fixation d'un deuxième côté de l'outil de coupe. La surface de coupe peut présenter des arêtes de coupe dont les caractéristiques varient le long de l'outil de coupe. Des nouveaux procédés permettant de fabriquer de tels outils de coupe sont également décrits.
EP13705034.0A 2012-01-13 2013-01-14 Alésoirs médicaux et procédés pour les former Withdrawn EP2802274A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261586685P 2012-01-13 2012-01-13
PCT/US2013/021473 WO2013106848A1 (fr) 2012-01-13 2013-01-14 Alésoirs médicaux et procédés pour les former

Publications (1)

Publication Number Publication Date
EP2802274A1 true EP2802274A1 (fr) 2014-11-19

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EP13705034.0A Withdrawn EP2802274A1 (fr) 2012-01-13 2013-01-14 Alésoirs médicaux et procédés pour les former

Country Status (9)

Country Link
US (2) US9101368B2 (fr)
EP (1) EP2802274A1 (fr)
JP (1) JP2015506238A (fr)
CN (1) CN104244847B (fr)
AU (1) AU2013207683B2 (fr)
CA (1) CA2860795C (fr)
MX (1) MX362876B (fr)
NZ (1) NZ626509A (fr)
WO (1) WO2013106848A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0516625D0 (en) * 2005-08-15 2005-09-21 Eurocut Ltd Orthopaedic surgical instrument
CH705550A1 (fr) * 2011-09-16 2013-03-28 Chirmat Sarl Outil chirurgical pour l'alésage du canal diaphysaire d'os longs.
DE102014203456B4 (de) * 2014-02-26 2016-11-03 Gebr. Brasseler Gmbh & Co. Kg Dentalinstrument
US9681881B1 (en) * 2014-03-31 2017-06-20 Ourtfg Corporation Acetabular reamer
CN103932767B (zh) * 2014-04-21 2016-08-24 南京大学医学院附属鼓楼医院 医用软骨移植受体松质骨床成形器
US10143480B2 (en) * 2014-06-20 2018-12-04 Viant As&O Holdings, Llc Disposable cutter acetabular reamer
US10543003B2 (en) * 2014-09-30 2020-01-28 Depuy Ireland Unlimited Company Orthopaedic surgical instrument assembly and method of manufacturing same
FR3028171A1 (fr) * 2014-11-07 2016-05-13 4-Star Holdings Sa Alesoir et procede de fabrication d'un tel alesoir
US10499931B2 (en) 2016-01-24 2019-12-10 Ping Xie Hemispherical reamer having circular cutting members and methods of making the same
FR3053883B1 (fr) * 2016-07-12 2022-04-29 Deuxventorio Sarl Procede de fabrication d'un alesoir
JP6698464B2 (ja) * 2016-07-29 2020-05-27 京セラ株式会社 評価方法および評価装置
EP3510947A1 (fr) * 2018-01-15 2019-07-17 Arthrex Inc Aléseur avec trous tranchants à netteté diverse
US11033282B2 (en) * 2018-02-22 2021-06-15 Symmetry Medical Manufacturing, Inc. Acetabular/patellar/glenoid/calcar reamer cutting tooth arrangment with depth-of-cut control feature
JP7146694B2 (ja) * 2019-05-22 2022-10-04 帝人ナカシマメディカル株式会社 カップリーマ
EP4069103A1 (fr) 2019-12-02 2022-10-12 DePuy Ireland Unlimited Company Ensembles et kits pour aléser des joints orthopédiques, et procédé d'assemblage d'un alésoir pour celui-ci
IT202000019405A1 (it) * 2020-08-06 2022-02-06 Hpf S R L Stazione automatizzata di taglio laser per la realizzazione di componenti semilavorati, componente semilavorato e relativo metodo di realizzazione
WO2022086749A1 (fr) * 2020-10-19 2022-04-28 Lrs Science And Technology, Llc Outil de coupe chirurgical

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US499619A (en) * 1893-06-13 Alfred weed
US1916874A (en) 1928-06-25 1933-07-04 Margon Corp Frazing tool
DE2543723C3 (de) * 1975-10-01 1978-04-06 Aesculap-Werke Ag Vormals Jetter & Scheerer, 7200 Tuttlingen Fräswerkzeug für chirurgische Zwecke
US4598447A (en) * 1984-09-20 1986-07-08 File Sharpening Company Farrier's file/rasp
US5171313A (en) * 1991-05-08 1992-12-15 Othy, Inc. Tool driver
US5709688A (en) * 1995-06-07 1998-01-20 Othy, Inc. Acetabular reamer cup and method of producing the same
NL1005251C2 (nl) * 1997-02-11 1998-08-12 Petrus Tarasius Jose Spierings Versnipperaar, in het bijzonder voor het versnipperen van bot, alsmede trommel voorzien van versnipperorganen toepasbaar in de versnipperaar.
CH692178A5 (de) * 1997-05-22 2002-03-15 Precimed Sa Fräser für medizinische Zwecke.
DE19953611C2 (de) 1999-11-08 2002-03-28 Zsolt Szabo Chirurgisches Bearbeitungswerkzeug zur Schaffung einer Vertiefung in einem Knorpel- und/oder Knochengewebe für eine Gelenksprothese
AU2002216310A1 (en) * 2000-12-21 2002-07-01 Precimed S.A. Holder for surgical reamer
US7922721B2 (en) * 2001-10-09 2011-04-12 Greatbatch Medical S.A. Acetabular reamer
US6730094B2 (en) * 2002-01-14 2004-05-04 Symmetry Medical Usa, Inc. Cutting edges for reamers and a method for making same
JP4409292B2 (ja) * 2002-01-16 2010-02-03 グレートバッチ メディカル エスアー 外科用リーマ
US6951563B2 (en) * 2002-03-22 2005-10-04 Symmetry Medical, Inc. Orthopaedic reamer with flat cutting teeth
US7909828B2 (en) * 2003-01-16 2011-03-22 Greatbatch Medical S.A. Contoured reamer teeth and method of manufacture
WO2004071310A1 (fr) * 2003-02-10 2004-08-26 Smith & Nephew, Inc. Alesoir cotyloidien
US7220264B1 (en) * 2003-03-12 2007-05-22 Biomet Manufacturing Corp. Minimally invasive reamer
US20050059974A1 (en) * 2003-09-15 2005-03-17 Wolford Todd A. Method of manufacturing an orthopaedic reamer
US7217272B2 (en) * 2003-11-25 2007-05-15 Symmetry Medical, Inc. Orthopaedic rotary reamer with implant compliant cutting teeth
ATE455506T1 (de) * 2003-11-28 2010-02-15 Marc-Etienne Favre Chirurgischer fräser
US20060217730A1 (en) * 2005-03-24 2006-09-28 Zafer Termanini Expandable spring loaded acetabuler reamer
GB0516625D0 (en) * 2005-08-15 2005-09-21 Eurocut Ltd Orthopaedic surgical instrument
DE102005058107A1 (de) 2005-12-05 2007-07-26 Müller, Erich Johann, Dr. med. Chirurgisches Bearbeitungswerkzeug
JP2009521962A (ja) * 2005-12-28 2009-06-11 ファーヴル，マルク−エティエンヌ 外科用リーマー及び外科用リーマーの刃
WO2007097749A1 (fr) * 2006-02-22 2007-08-30 Grace Christopher R Alésoir acétabulaire jetable et méthode pour le fabriquer
EP2359755B1 (fr) * 2010-02-12 2014-01-15 Greatbatch Ltd. Aléseur jetable
US8834471B2 (en) * 2010-02-23 2014-09-16 Greatbatch Medical S.A. Angled reamer spindle for minimally invasive hip replacement surgery

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013106848A1 *

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CA2860795C (fr) 2023-10-03
US20140188116A1 (en) 2014-07-03
MX2014008254A (es) 2014-11-26
CN104244847B (zh) 2017-06-09
CA2860795A1 (fr) 2013-07-18
MX362876B (es) 2019-02-21
US20130245628A1 (en) 2013-09-19
CN104244847A (zh) 2014-12-24
NZ626509A (en) 2016-06-24
JP2015506238A (ja) 2015-03-02
US9101368B2 (en) 2015-08-11
AU2013207683A1 (en) 2014-07-17
AU2013207683B2 (en) 2016-07-07
WO2013106848A1 (fr) 2013-07-18

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